Planar micro-miniature ion trap devices

Details Planar micro-miniature ion trap devices Planar micro-miniature ion trap devices

2007-05-15

2007-05-15

Berman, Jack (Department: 2881)

Radiant energy

Ionic separation or analysis

Cyclically varying ion selecting field means

C250S292000

Reexamination Certificate

active

11079861

ABSTRACT:
A micro-miniature ion trap device comprises a wafer (or substrate) having a major surface, a multiplicity of electrodes forming a micro-miniature ion trap in a region adjacent the major surface when voltage is applied to the electrodes, characterized in that the multiplicity includes a first, planar annular electrode located over and rigidly affixed to the major surface, and at least one second, planar annular electrode located over and rigidly affixed to the major surface, the at least one second electrode being concentric with the first electrode. The at least one second electrode may be completely annular, in that the annulus forms a closed geometric shape, or it may be partially annular, in that the annulus has a slot or opening allowing access to the first electrode. In accordance with a preferred embodiment of our invention, the at least one second electrode is C-shaped, and the angle subtended by the C-shape is greater than 180 degrees.

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J. Chiaverini et al., “Dense Coding Demonstration and Microfabricated Ion Traps,” presented at the Workshop on Trapped Ion Quantum Computing, May 13-15, 2004, University of Michigan, Ann Arbor; see the NIST Boulder website at URL www. boulder.nist.gov/timefreq/ion/tiqc1.pdf.
S. Pau et al., U.S. Appl. No. 11/048,229, filed on Feb. 1, 2005 (no copy enclosed).
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